I’ve had this…except we had a metre at one end so I could lie under the basin and wriggle down the side of the bath and painstakingly try to hold the nut whilst my other half rotated the tap, then try to turn the nut with the tap, tighten again etc.
Seen a couple of houses for sale with the side taps on the room side of the bath, looks really weird but reckon the plumber made the choice as they were rentals etc.
Could you use a vibrating multitool to cut a letterbox (with taps) out of the bath, and then remount the taps with long stainless flexy tails into a large piece of UPVC with chamfered edges, or bit of hardwood, and stick it back onto the bath?! Might look really rubbish, or might be OK if you do a good job…